... wind and hail impact resistance etc advantages....Warranty for 25 years, 90% of original efficiency in 10 years, ... 80% in 25 years. Item No. SPV-60M Maximum Power(W) ... ±3%Max System Voltage(V) 1000VDC STC: T=25, A=1.5, E=1000W/M2 Mechanical Data ... Output Warranted Tolerance: ±5%15 year:90% of its nominal power rating25 year:80% of its nominal power ratingImpact ...